Friendship
Overview
Friendship is a form of interpersonal relationship
Interpersonal relationship
An interpersonal relationship is an association between two or more people that may range from fleeting to enduring. This association may be based on limerence, love, solidarity, regular business interactions, or some other type of social commitment. Interpersonal relationships are formed in the...

 generally considered to be closer than association, although there is a range of degrees of intimacy in both friendships and associations. Friendship and association are often thought of as spanning across the same continuum
Continuum
Continuum may refer to:* Continuum , anything that goes through a gradual transition from one condition, to a different condition, without any abrupt changes-Linguistics:...

. The study of friendship is included in the fields of sociology
Sociology
Sociology is the study of society. It is a social science—a term with which it is sometimes synonymous—which uses various methods of empirical investigation and critical analysis to develop a body of knowledge about human social activity...

, social psychology
Social psychology
Social psychology is the scientific study of how people's thoughts, feelings, and behaviors are influenced by the actual, imagined, or implied presence of others. By this definition, scientific refers to the empirical method of investigation. The terms thoughts, feelings, and behaviors include all...

, anthropology
Anthropology
Anthropology is the study of humanity. It has origins in the humanities, the natural sciences, and the social sciences. The term "anthropology" is from the Greek anthrōpos , "man", understood to mean mankind or humanity, and -logia , "discourse" or "study", and was first used in 1501 by German...

, philosophy
Philosophy
Philosophy is the study of general and fundamental problems, such as those connected with existence, knowledge, values, reason, mind, and language. Philosophy is distinguished from other ways of addressing such problems by its critical, generally systematic approach and its reliance on rational...

, and zoology
Zoology
Zoology |zoölogy]]), is the branch of biology that relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct...

. Various academic theories of friendship have been proposed, among which are social exchange theory
Social exchange theory
Social exchange theory is a social psychological and sociological perspective that explains social change and stability as a process of negotiated exchanges between parties. Social exchange theory posits that all human relationships are formed by the use of a subjective cost-benefit analysis and...

, equity theory
Equity theory
Equity theory is a theory that attempts to explain relational satisfaction in terms of perceptions of fair/unfair distributions of resources within interpersonal relationships...

, relational dialectics, and attachment styles.

Value
Value (personal and cultural)
A personal or cultural value is an absolute or relative ethical value, the assumption of which can be the basis for ethical action. A value system is a set of consistent values and measures. A principle value is a foundation upon which other values and measures of integrity are based...

 that is found in friendships is often the result of a friend demonstrating the following on a consistent basis:
  • The tendency to desire what is best for the other
    Altruism
    Altruism is a concern for the welfare of others. It is a traditional virtue in many cultures, and a core aspect of various religious traditions, though the concept of 'others' toward whom concern should be directed can vary among cultures and religions. Altruism is the opposite of...

  • Sympathy
    Sympathy
    Sympathy is a social affinity in which one person stands with another person, closely understanding his or her feelings. Also known as empathic concern, it is the feeling of compassion or concern for another, the wish to see them better off or happier. Although empathy and sympathy are often used...

     and empathy
    Empathy
    Empathy is the capacity to recognize and, to some extent, share feelings that are being experienced by another sapient or semi-sapient being. Someone may need to have a certain amount of empathy before they are able to feel compassion. The English word was coined in 1909 by E.B...

  • Honesty
    Honesty
    Honesty refers to a facet of moral character and denotes positive, virtuous attributes such as integrity, truthfulness, and straightforwardness along with the absence of lying, cheating, or theft....

    , perhaps in situations where it may be difficult for others to speak the truth
    Truth
    Truth has a variety of meanings, such as the state of being in accord with fact or reality. It can also mean having fidelity to an original or to a standard or ideal. In a common usage, it also means constancy or sincerity in action or character...

    , especially in terms of pointing out the perceived faults of one's counterpart
  • Mutual understanding
    Understanding
    Understanding is a psychological process related to an abstract or physical object, such as a person, situation, or message whereby one is able to think about it and use concepts to deal adequately with that object....

     and compassion
    Compassion
    Compassion is a virtue — one in which the emotional capacities of empathy and sympathy are regarded as a part of love itself, and a cornerstone of greater social interconnection and humanism — foundational to the highest principles in philosophy, society, and personhood.There is an aspect of...

    ; ability to go to each other for emotional support
  • Enjoyment of each other's company
  • Trust in one another
  • Positive reciprocity
    Reciprocity (social psychology)
    Reciprocity in social psychology refers to responding to a positive action with another positive action, rewarding kind actions. People categorize an action as kind by viewing its consequences and also by the person's fundamental intentions. Even if the consequences are the same, underlying...

     — a relationship is based on equal give-and-take between the two parties.
  • The ability to be oneself, express one's feelings and make mistakes without fear of judgement.

Friendship was a topic of moral philosophy much discussed by Plato, Aristotle, and the Stoics, but less so in the modern era, until the re-emergence of contextualist and feminist approaches to ethics.
Quotations

A friend is a person with whom I may be sincere. Before him, I may think aloud.

Ralph Waldo Emerson, in "Friendship" in Essays, First series (1841)

Faithful are the wounds of a friend, But deceitful are the kisses of an enemy.

The Bible, Proverbs 27:6 (NASB)

A friendship that can be ended didn't ever start.

Mellin de Saint-Gelais, Oeuvres poétiques

A friend in need is a friend indeed.

Scots proverb, as published in Beauties of Allan Ramsay: Being a Selection of the Most Admired Pieces of that Celebrated Author, viz. The Gentle Shepherd; Christ's Kirk on the Green; The Monk, and the Miller's Wife; with his valuable collection of Scots Proverbs (1815), "Scots Proverbs" Ch. 1; also quoted in Pure Morning|Pure Morning, a song by Placebo|Placebo.

A friend loves at all times, and kinsfolk are born to share adversity.

The Bible, Proverbs 17:17 (NRSV)

A man of many companions may come to ruin, but there is a friend who sticks closer than a brother.

Proverbs 18:24, The Bible (New International Version)

It is amazing how you can surround yourself with so many people you can call friends, and yet actually only have one or two real ones.

Jerry Grant Blakeney

Each friend represents a world in us, a world possibly not born until they arrive, and it is only by this meeting that a new world is born.

Anaïs Nin, Diary entry, March 1937

A faithful friend is a sturdy shelter;he who finds one finds a treasure.A faithful friend is beyond price,no sum can balance his worth.

Sirach 6:14-15 (The New American Bible)

Friendship is not for merriment but for stern reproach when friends go astray.

Tiruvalluvar, Tirukkural: 784

 
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